Expansion joint for composition flooring



Oct. 6, 1925. 1,555,844

K E. A. HERR EXPANSION JOINT FOR COMPOSITION FLOORING Filed Api-11 2. 1924 a @Mw @MM v Ms.

Patented ct. 1925.

f UNITED STATES PATENT oFFlcE.

EDWARDv AUsTIN man., or rnmanmma, PENNSYLVANIA.

EXPANSION JOINT FOB COMPOSITION FLOORING.

Application led April 2,'1924. Serial No. 703,654.

' To all whom t may concern.' I A Be it known that I, EDWARD AUSTIN HERB,

of Philadelphia., in the county bf Philadelphia and State of Pennsylvania, a citizen of the United States, have invented certain new and useful Improvements in Expansion Joints for Composition F1ooring,fof which the following isa specification. p

' This invention relates to means for accom- .10 modating expansion in composition or artificial stone floors and for preventing the formation-of cracks therein.

Extended observation and experience has demonstrated that the structural cracks in composition or artificial stone floors are due to the expansion of the floor against rigid or xed points or angles, such as are found on plinths, pilasters, elevators, stationary store fixtures, etc., and my invention has for its object the provision of a yielding body which will receive and accommodate they pressure normally exerted by the expanding'Y oor, eliminating the splitting force of the point or angle and thereby preventing the `the top edge 8 is inclined downwardly and formation of cracks. l

My invention is illustrated in the accomanying drawing and will be `hereinafter ully set forth.

In the drawing, Fig. 1 is a perspective 80 view of a portion of a room having my improvement included therein,

Fig. 2 is a detail showing a portion of the Hoor in plan and a corner of a pillarin hori-` zontal section with the invention applied thereto,

Fig. 3 is a section, on the line A3,-3 of Fig. 2, Y ,i

ig. 4, isa view, similar toFig. 2, showinjhe invention applied to an angle, 4o ',g. 5 'is a sectlon on the line 5-5 of Fig. 4,

Fig. 6 is a plan view and Fig. 7 `an elevation of the block shown in Figs. 2and 3,

Figs. 8 and 9 are, respectively, a plan y and an-elevation of the block shown 1n F lgs.

4 and 5, y s

Figs. 10 and 11 are detail sections showing additional forms of blocks. 'In the drawing, the reference numeral 41 indicates a floor of artificial stone, such as cement or other plastic material, 2 denotes a pillar, and 3 a wall. 'Where a composition Hoor is employed, a sanitary b ase board, 4, is usually provided against which the floor is laid. In carrying out my lpresent invenstruction to safe and easy travelI over Athe floor. While the material of the {ioor will anchor the strip in place, it will have Suthcient substance to permit securing nails lto be driven therethrough if desired. s

Ordinarily, the floor is laid so as to abut the base board, but with my invention Ivinsert astripof yieldable material in the angle formed by the ioor 4and the base board, as shown at 6. It will be readily noted that the side edge 7 of the strip is dis-I posed obliquely so that the floor will overlap the. same and hold the strip down while backwardly so that the base board'will eiect locking engagement therewith. The exposed face 9 of the strip preferably defines a concave arc in cross section to facilitate cleaning, although itmay present any other desired contour.

In appl ing the invention to a corner, as l shown in erably given the form of a circular button or disk 10 having a sector segment at 11.re

moved whereby it may be fitted closely to the corner and intersecting sides of a pillar, pilaster or other object. The outer side edge of the disk or button is inclined downwardly and outwardly relative to its axis, as at 12, so that Athe material of the floor may overle it and anchor the disk in place. In applying ',ton or disk, as/,shown in Fig. 6, utilized for exterior angles as shown in Fi 2. The arcuate edge is shaped to underlle the ylicor material, as in the other forms reviously described, and, as shown clearly m Figs. 3,

ig.- 2, the yieldable body is prefcovered.

and 5, the inner flat edges of the disks are inclined away from the pillar or the wall to define anv open space, l5, to increase the capacity of the body to accommodate eX- pansion in the floor.

In all the vforms thus far described, the base of the body is continuous but it may be provided with a central groove, 16, as shown in Figs. 10 and 11, Fig. 10 showing a strip similar to the strip 5, and Fig. 11 showinga corner strip similar tothe strip 6. The groove 16, like the bevel of the fiat edge portions of the disks, increases the yieldability of the resilient body, and should be employed where the joint is laid over a beam or concrete, or a\large area is to be Having thus fully described my invention,

' what I claim as new and desire to secure by Letters Patent of the United States is l. A resilient device for use in composition surfaces, said device having the form of a circular button or disk with a sector removed therefrom, the outer side edge ofthe disk inclined downwardly and outwardly, and the inner Hat edges of the disk inclined downwardly and away from Athe upper edge thereof, substantially as and for the purpose set forth.

2. A resilient device for use in composition surfaces, said device having the form of a button or disk with a segment removed therefrom. l

'3. A resilient device for use in composition surfaces, said device having the form of a circular button or disk with a segment removed therefrom.

4. A resilient device for use in composition surfaces, said device .having the form of a circular button or disk with a segment removed therefrom, the outer side edge of the disk inclined downwardly and outwardly, substantially as and for the purpose set forth.

5. A'resilie'nt device for use in composition surfaces, said device having the form of ya circular button or disk with al segment removed therefrom, the inner flat edges of the disk inclined downwardly and away from the upper edge thereof.

In testimony whereof I hereunto afhx my signature.

EDWARD AUSTIN HERR. 

